Microstructural, Mechanical and Corrosion Properties of AZ91 Magnesium Alloy Processed by a Severe Plastic Deformation Method of Hydrostatic Cyclic Expansion Extrusion

2020 ◽  
Author(s):  
Armin Siahsarani ◽  
Farshad Samadpour ◽  
Mohammad Hossein Mortazavi ◽  
Ghader Faraji
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Severe Plastic Deformation ◽  
Az91 Magnesium Alloy ◽  
Deformation Method ◽  
Corrosion Properties ◽  
Az91 Magnesium ◽  
Mechanical And Corrosion Properties

Investigation on the Creep Behavior of AZ91 Magnesium Alloy Processed by Severe Plastic Deformation

2019 ◽  
Vol 26 (2) ◽  
pp. 196-204 ◽  
Author(s):  
Iraj Khoubrou ◽  
Bahram Nami ◽  
Seyyed Mehdi Miresmaeili
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Severe Plastic Deformation ◽  
Creep Behavior ◽  
Az91 Magnesium Alloy ◽  
Az91 Magnesium

scholarly journals Improvement of AZ91 Alloy Corrosion Properties by Duplex NI-P Coating Deposition

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1357 ◽  
Author(s):  
Jaromír Wasserbauer ◽  
Martin Buchtík ◽  
Jakub Tkacz ◽  
Stanislava Fintová ◽  
Jozef Minda ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Salt Spray ◽  
Az91 Alloy ◽  
Neutral Salt ◽  
Az91 Magnesium Alloy ◽  
Corrosion Properties ◽  
Az91 Magnesium

The corrosion behavior of duplex Ni-P coatings deposited on AZ91 magnesium alloy was studied. The electroless deposition process of duplex Ni-P coating consisted in the preparation of low-phosphorus Ni-P coating (5.7 wt.% of P), which served as a bond coating and high-phosphorus Ni-P coating (11.5 wt.% of P) deposited on it. The duplex Ni-P coatings with the thickness of 25, 50, 75 and 100 µm were deposited on AZ91 magnesium alloy. The electrochemical corrosion behavior of coated AZ91 magnesium alloy was investigated by electrochemical impedance spectroscopy and potentiodynamic polarization method in 0.1 M NaCl. Obtained results showed a significant improvement in the corrosion resistance of coated specimens when compared to uncoated AZ91 magnesium alloy. From the results of the immersion tests in 3.5 wt.% NaCl, 10% solution of HCl and NaOH and 5% neutral salt spray, a noticeable increase in the corrosion resistance with the increasing thickness of the Ni-P coating was observed.

Microstructure and properties of magnesium alloy processed by a new severe plastic deformation method

2007 ◽  
Vol 61 (23-24) ◽  
pp. 4599-4602 ◽  
Author(s):  
Q.D. Wang ◽  
Y.J. Chen ◽  
J.B. Lin ◽  
L.J. Zhang ◽  
C.Q. Zhai
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Severe Plastic Deformation ◽  
Deformation Method ◽  
Microstructure And Properties

Enhanced Plastic Deformation of Magnesium Alloy Produced through Accumulative Diffusion Bonding

2012 ◽  
Vol 735 ◽  
pp. 87-92 ◽  
Author(s):  
Koichi Kitazono ◽  
Yutaro Shimoda ◽  
Shigeki Kato
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Diffusion Bonding ◽  
Alloy Sheet ◽  
Az91 Magnesium Alloy ◽  
Bending Tests ◽  
Random Texture ◽  
Az91 Magnesium ◽  
Hcp Structure ◽  
High Plastic

Plastic deformation of magnesium alloy is limited because of its HCP structure. Though the grain refined magnesium alloy exhibits superplastic deformation at elevated temperature, the strength decreases due to induced cavitation. This study focusses on developing the random texture of magnesium alloy and causes relatively high plastic deformation even at room temperature. Random texture is produced through newly proposed accumulative diffusion bonding process using commercial AZ91 magnesium alloy sheets. Tensile and V-bending tests reveal that the enhanced ductility of the produced magnesium alloy sheet.

scholarly journals The influence of new severe plastic deformation on microstructure, mechanical and corrosion properties of Mg-0.8Mn-0.5Ca alloy

2021 ◽  
pp. 46-46
Author(s):  
M. Khani ◽  
G.R. Ebrahimi ◽  
H.R. Ezatpour ◽  
A. Momeni
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Tensile Elongation ◽  
Effective Strain ◽  
Corrosion Properties ◽  
Average Grain Size ◽  
Internal Angle ◽  
Processed Sample ◽  
Mechanical And Corrosion Properties ◽  
Sbf Solution

In this research, the effect of accumulative extrusion bonding (AEB) on the microstructure and mechanical properties of Mg-0.8Mn-0.5Ca biocompatible alloy was investigated. The goal of this research was to develop the mechanical and corrosion properties of Mg-0.8Mn-0.5Ca alloy after ABE process as a novel severe plastic deformation process. The simulation of AEB process showed that the average effective strain per pass for channels with the internal angle of 120? is about 1.93. The average grain size was dramatically decreased from about 448.3 ?m for the homogenized alloy to 1.55 ?m for the 3-pass processed sample. Microstructural observations suggested a combination of continuous, discontinuous and twinning-induced dynamic recrystallization as the major mechanisms of grain refinement. Tensile and compressive strengths were improved from 150 and 205 MPa to 330 and 301 MPa after three passes of AEB, respectively indicating 2 and 1.5 times improvements, respectively. Tensile elongation decreased from 26 % for the homogenized sample to 7.5 % for the 3-pass processed sample due to the severe work-hardening, non-uniform strains and inhomogeneous microstructure produced by ABE process. Corrosion resistance in SBF solution was improved from 1.1 to 14.159 K? Cm2 after three passes of ABE due to the presence of hydroxyapatite formed on the surface of the AEBed samples.

Processing of AZ31 magnesium alloy by a new noble severe plastic deformation method

2011 ◽  
Vol 528 (3) ◽  
pp. 1334-1339 ◽  
Author(s):  
S.M. Fatemi-Varzaneh ◽  
A. Zarei-Hanzaki
Keyword(s):  
Plastic Deformation ◽  
Magnesium Alloy ◽  
Severe Plastic Deformation ◽  
Az31 Magnesium Alloy ◽  
Deformation Method

Effect of Sc on Microstructures and Corrosion Properties of AZ91

2007 ◽  
Vol 546-549 ◽  
pp. 139-142 ◽  
Author(s):  
Su Juan Yao ◽  
Dan Qing Yi ◽  
Sheng Yang ◽  
X.H. Cang ◽  
W.X. Li
Keyword(s):  
Magnesium Alloy ◽  
Electrochemical Technique ◽  
Second Phase ◽  
Az91 Magnesium Alloy ◽  
Corrosion Properties ◽  
Corrosion Resistant ◽  
Az91 Magnesium

The microstructures and corrosion properties of AZ91 magnesium alloy with trace additions of Sc were investigated. The microstructures were observed by OM and SEM, and the corrosion properties were studied by electrochemical technique. The results show that the alloys with Sc form a second-phase Al3Sc, the grains become finer with the increasing content of Sc and the microstructure is the finest when Sc content up to 0.6%, the corrosion resistant of alloy combining with Sc is improved.

Anodization of AZ91 magnesium alloy in alkaline solution containing silicate and corrosion properties of anodized films

2008 ◽  
Vol 18 (3) ◽  
pp. 722-727 ◽  
Author(s):  
Ling-ling LI ◽  
Ying-liang CHENG ◽  
Hui-min WANG ◽  
Zhao ZHANG
Keyword(s):  
Magnesium Alloy ◽  
Alkaline Solution ◽  
Az91 Magnesium Alloy ◽  
Corrosion Properties ◽  
Az91 Magnesium
Sign in / Sign up

Export Citation Format

Share Document